Possibly. Blogspot's site will probably have a "Contact Us" kind of thing on it somewhere. You might try that.
I'll check it out. I'm just AMAZED that they don't provide this service. When I first started the DUmmie FUnnies I figured I see if it would take off and if it did, I would get my own unique URL. Well, things did work out but I was SHOCKED that they didn't provide this type of upgrade service. It just seems so counterproductive on their part. I bet they are losing a lot of blogs because of this.